code: def test_mdnrnn_simulate_world_cpu(self):
      self._test_mdnrnn_simulate_world()
  
file_path: ReAgent/reagent/test/world_model/test_mdnrnn.py
imports: import logging
  import unittest
  import numpy
  import torch
  from reagent.core.parameters import MDNRNNTrainerParameters
  from reagent.models.mdn_rnn import gmm_loss, MDNRNNMemoryPool
  from reagent.models.world_model import MemoryNetwork
  from reagent.reporting.world_model_reporter import WorldModelReporter
  from reagent.test.world_model.simulated_world_model import SimulatedWorldModel
  from reagent.training.world_model.mdnrnn_trainer import MDNRNNTrainer
  from torch.distributions.categorical import Categorical
  from torch.distributions.normal import Normal
label_desc: Use image node_id 2 for calling the TestMDNRNN obj's underlying member method code with example usage: obj.test_mdnrnn_simulate_world_cpu() without return types